Problem with my Superduty.
2011 Ford F-350 dually. 67k miles bought new. When I get in truck and go somewhere the "service engine indicator " is on. And stays on. Next time stays off. Dealership says fault code P204B Ran poi...
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I had a check engine light come on on my 2011, I can't remember the code but it was for the DEF tank heating element. I wired in a resister to mimic the blown heating element and it caused the check engine light to come on intermittently (I guess the resistance wasn't quite right). I ended up purchasing an entire DEF system from someone who deleted his new F450. The F450 has a different part number for the def tank but the only difference in the part was that the sensor for the low def indicator sensed a slightly higher level on the F450. Anyway it cost me $300 for the parts and I did the labor myself.
